Governor



May 18,1926. 1,584,930

' R. G. HANDY ET AL GOVERNOR Original Filed septl. 1921 2 Sheets-Sheet 1 May 18 1926.

R. G. HANDY ET AL GOVERNOR Original Filed p l, 1921 2 Sheets-Sheet 2 Patented May 118, i926.

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ROBERT G. HANDY AND ARTHUR A. BULL, OF DETROIT, MICHIGAN, .ASSIGNORS TO HANDY GOVERNOR CORPORATION, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

GOVERNOR.

Application filed September 1, 1921, Serial No. 497,461. Renewed November 21, 1925.

The present invention relates to governors for hydrocarbon motors and more particularly to the means for adjusting the setting of the same. It is well recognized that the i motors of motor vehicles should be provided with some means to limit the speed of the motor or vehicle. Preferably the speed limiting means or governor should be locked against change or tampering by the operator so that the maximum desired speed may not be exceeded. Many such governors have been placed on the market, most of them being adjustable to vary the maximum speed allowed and having a seal or look for preventing tampering with the adjusting device. In addition to the foregolng adjustment, which may be termed the main adjustment, it is desirable to have a manual adjustment constructed and arranged so that the governor may be set to govern the speed of the engine at something less than the maximum determined by the main adjustment. For example it is desirable to plow at different rates in diiferent soils. With the manual adjustment mentioned above it it possible to set the governor so that the tractor will operate at any one of a plurality of speeds below the maximum determined by the main adjustment. Again when using the motor of a tractor or other vehicle for operating another machine such as a thrashing machine, it may be necessary to run the motor at .a lower speed than the maximum usually determined by the governor.

The present invention aims to provide a manual adjustment whereby the motor may be run at a lower constant speed than the maximum allowed by the governor. To this end the invention consists of a governor having a main adjusting means for determining the limiting speed of the motor adapted to be locked against tampering; and a supplemental means, manually ad justable, to set the governor to operate at a speed within said limit. The invention also comprehends the use of the manual adjustment without the main adjustment.

The objects and features of novelty will be apparent from thedescription taken in connection with the drawings in which Figure l is a front side elevation of one typeot governor having the present inventi n i od ed-th ng" Figure 2 is a similar view with the cover plate removed;

Figure 3 is a sectional elevation taken substantially on the line 3-3 of Fig. 1;

Figure 4 is a top plan view of the governor shown in Fig. 1; Figure 5 is an inside view of the adjustnng cap and clock spring associated therewith and igure 6 is a sectional view of a detail taken substantially on the line 66 of Fig. 1. Referring to the drawings the present mvention is illustrated in connection with a governor described and claimed in our co-pending application Serial No. 383,259 filed May 21, 1920. It is to be understood however that the invention is not limited to being employed with this particular type of governor. Briefly stated, the governor shown comprises a hollow casting 2O having end flanges 21 and 22 adapting the casting to be secured to form a part of the intake conduit of the motor. Disposed within the intake conduit is a butterfly valve comprlsing the plate 23 secured to the spindle 24 in any suitable manner as by means of the screws 25. As clearly shown in Fig. 2 the spindle 24- is slabbed off at 26 to atford a flat seat for the'plate 23. Further more the axis of spindle 24 is disposed toward one side of the valve plate 23 with respect to its center line, so that the valve is unbalanced. The effort tending to close the valve 23 or similar obstructing means increases at an accelerated rate as the valve is moved in a closing direction. This closing effort is counterbalanced when the motor is operating at a constant speed by a yielding device and transmitting mechanism.

As illustrated a chamber 27' is formed between one wall of the intake conduit and an enclosing housing 28, this housing being secured to the side of the conduit in any slut-able manner as by means of the screws 29. The housing is formed with a circular opening 30 within which is fitted a circular cap 31 having a radially extending flan e 32 formed with serrations 33. The yiel able device referred to consists of a coiled or watch spring 34 carried by'the cap 31. One

end of this spring, as shown the outer end,-

is formed with a hook 47' which receives a p n 18 carri d. vaaai'm. it piv tally,

Cir

mounted on a pin 42. This arm 4:1 is provided with a cam surface 41' adapted to cooperate with a cam surface 43 on an arm 43 secured to the spindle 24. The ar rangement and construction is such that the spring 34 has its force varied by means of the transmitting mechanism so that as the butterfly valve moves in a closing direction, its movement is opposed by an equal and opposite resistance when the motor is operating at a constant predetermined speed.

It will be observed that the maximum speed permitted by the governor is controlled by the tension of the yielding means 01' spring 34. If the spring 34 exerts no opposition to the closing of the valve obviously the intake conduit will be obstructed by the valve at a very low speed. As the tension of the s ring 3 is increased the maximum allowed speed of themotor is increased. According to the present invention means is provided for manually varying the tension of spring 31 up to a certain amount which can not be exceeded, thus permitting adjustment of the governed speed of the motor to any amount within a certain predetermined maximum.

As shown the cap 31 is provided with a central boss 35 through which extends a short shaft 36, the interior end of which is slotted and has the inner end of the spring disposed therein as shown in Fig. 5. The shaft 36 projects outside the cap and carries an arm 37 adjustably secured thereto for rotation therewith in any suitable manner. As shown, the end of the arm is split and clamped on the shaft 36 by a screw 37. Between the spring 3% and the cap the shaft 36 is formed with a flange 38 which is slabbed off as at 39 and adapted to contact after limited rotation with the inclined faces or shoulders e0 formed on the inside of the cap 31. 4

Thus the shaft 36 may be turned through a slight angle by the arm 37 and thereby adjust the tension of the spring 3%. This constitutes the manually operable means for adjusting the governor to permit its operation atany speed below a predetermined maximum. As the shaft 36 has only limited rotation in the direction to increase the tension of the spring, the maximum speed allowed by the governor will be determined by the position of the stop which limits said rotation of the shaft 36. It is obvious that this stop or surface 10 may be non-adjustable. On the other hand it is preferred to have the same mounted for adjustment, but secured against tamperin by the operator. To this end, as shown in the drawing, the springcarrying cap 31 has an axially extending tiange rotatively fitting within the opening 30. It will be seen that rotation of the cap 31 varies the position of the stops or shoulders 40 and. hence determines the 72:-

imum speed permitted by the governor. In the form shown in order to prevent removal of the cap 31, the flange 19 is provided with a peripheral groove into which projects a set screw 51 carried by the housing 28. For the purpose of locking the cap 31 in any adjusted position, the housing 28 is provided with a lug formed with an opening for a pin 54. This pin has a head engaging one side of the lug and is long enough to lit in any one of the serrations 33 on the periphery of the cap, the end of the pin being formed with teeth 57 for this purpose. The pin 51 may be held against removal by a sealing means such as indicated at 56 and against backing out of the lug 52 by the stop 20 on the casting 20. It is to be noted that the set screw 51 is positioned so that the pin 5 renders the same inaccessible. In other words it is necessary to remove pin 5st before set screw 51 can be loosened, and the cap 31 removed.

From the foregoing it will be seen that the tension of spring 34 may be adjusted by turning cap 31, this adjustment being termed the main adjustment of the governor and determining the maximum speed permitted by the governing mechanism. Furthermore the governor may be set to operate at any constant speed below the maximum by the manual adjustment of arm 37.

Although the invention has been described as embodied in a specific form of governor it is to be understood that the invention is not thus limited as it may be adapted for use in connection with other forms of governors.

Having thus described our invention what we claim as new and desire to secure by Letters Patent is:

1. In a governing device, in combination. a clock spring opposing movement of said device in one direction, main adji ting means for said sprin means to loci: said adjusting means in adjusted position and against tampering, and manually operable means to adjust said spring within the limit set by the main adjusting means.

2. in a governing device, in combination, an adjustable support, a clock spring opposing movement of said device in one direction. a member carried by said support cugaging one end of said spring, said member being manually adjustable within limits. and means to lock said support in adjust ed position and against tan'ipering.

3. In a governing device. in combination, a rotatably adjustable cap, a cloclc spring opposing movement of said device in one direction, a. member carried by said cap engaging one end of said spring and manually operable to vary the tension of said spring within the limit set by said cap, and means to lock said cap in adjusted position and against tampering.

1 a. a governing device, in combination,

a housing, a spring in said housing controlling the movement of said device, a manually operable membersecured to one end of said spring, a support for said member, means limiting the movement of said member relative to said support,- said housing carrying said support for adjustment to limit the maximum tension of said spring and means to lock said support in adjusted position and against tampering. 5. In a governing device, in combination, a housing, a rotatably adjustable support carried by said housing, a spring enclosed in said housing controlling the operation of said device, a manually operable member secured to one end of said spring, means limiting the movement of said member relative to said support, and means to lock'said support in adjusted position and against tampering to limit the maximum tension of the spring. 3 i 6. In a governing device,'in combination, a housing having a circular opening, a cap closing said opening and rotatably adjust-- able therein, a yielding device controlling the operation of said device, a manually operable member adjustably carried by said cap and connected to said yielding device for varying the effect of the same onthe governing device, means limiting the movement of said member relative to the cap and means to lock the cap in adjusted position preventing tampering with said yielding device, the adjustmentlof said cap determining the maximum effect of said yielding device. 7. In a governing mechanism, in combination, a housing havinga circular opening, a cap closing said opening and rotatably adjustable therein, acircularly acting yielding device controlling the operation of said mechanism disposed'coaxially with said cap and within said housing, a manually operable member rotatively mounted at the center of said cap extending through the same and engaging said device to adjust the same, means limiting movement of. said member relative to said cap, and means locking the cap in adjusted-position, the adjustment of said cap determining the maximum effectofsaid device.

8. In a governing mechanism, in combination, a housing having a circular opening, a cap closing said opening and rotatably adjustable therein. a clock spring controlling the action of said mechanism disposed within said housing. a shaft at the center of the cap extending through the same and secured to the inner end of said spring, means limiting rotation of the shaft relative to the cap, and means locking the cap in adjusted position, the adjustment of said cap determining the maximum, speed permitted by the gov-. ernor and said shaft constituting means for adjusting the governor for a lower 5 eecl.

9. In a governing mechanism, iii com' 'nation, a housing having a. circular opening, I

a. cap closing said opening and rotatably adjustable'therein, a clock spring within the nation, a housing, a clock spring within the housing controlling the action of the media nism, main adjusting means carrying ,said spring and operable therein to determine the maximum speed permitted bythe governor, means to lock said main .adjusting means, and manually operable supplemental spring adjusting means to vary the speed below. the maximum set bysaid main adjusting means.

11. In a governor for hydrocarbon motors, an adjustable spring support, means securing said support against removal without interfering with adjustment thereof and means locking the support in adjusted position, said securing means being covered by the locking means and accessible only after A removal of the locking means.

12. In a governor for hydrocarbon motors,

a housing, a spring supporting cap rotatably.

carried by said housing, means securing the cap against axial movement Without interfering with "rotative movement thereof, and

means locking the cap against rotative movement, said locking means being disposed to prevent access to sald first mentioned means.

13. In a governing mechanism, in combi nation, a housing, aclock spring within the housing, a manually operable rotatably mounted shaft engaging the inner end of said spring to adjust the tension thereof. and a stop limiting the rotation of the shaft in the direction to increase the speed permitted by the governor, whereby the mechanism may be manually set at any speed below a predetermined maximum.

14. In a governing mechanism, in combination, a housing, a clopk spring within the housing, manually operable means engaging one end of the spring to adjust .the tension thereof, and means limiting movement of said manually'operable means in the vdire'c- 'tion to increase the speed permitted by the mechanism, whereby the governorv may be manually set at any-speed below a prcdetermined maximum.

- 15. The combination. with a governing the speed of a motor, of controlling'mechanism therefor including a yieldin device, means'to transmit the force of said device to said throttle constructed and arranged to multiply the effect of said device asthe throttle closes, and means always throttle a.

under the control of the operator to vary the force of said device and thereby the speed. of the motor.

16. A governing device for the intake of hydrocarbon motors including in combination, an intake conduit, means in said conduit adapted to be actuated to obstruct said conduit in accordance with the flow of fluid therein. resisting means, and mechanism transmitting the efi'ort of said resisting means to oppose the obstruction of said conduit, said transmitting mechanism being constructed and arranged to a vary the etl'ort exerted on said obstructing means by said resisting means as the obstruction of the conduit varies, means to limit the maximum effort of said resisting means and means to adjust the resisting means Within said maximum to thereby vary the settings of said device.

17. A governing device for hydrocarbon motors comprising an intake conduit, an un balanced butterfly valve therein, and a counterbalancing means connected to balance the turning eiiort of said valve at a predetermined speed of the motor including an arm secured to turn with said valve, yielding means acting on said arm having its point of action shifted radially as the arm turns to vary the efi ort of the yielding means on the valve as it closes, means to limit the maximum effort of said yielding means and thereby the maximum speed of the motor, and means to adjust said yielding means within said maximum to thereby vary the settings of said device.

18. A governing device for hydrocarbon motors comprising an intake conduit, an unbalanced butterfly valve therein, and a counterbalancing means connected to balance the turning effort of said valve at a predetermined speed of the motor including an arm secured to turn with said valve, a spring acting on said arm having its point of action shifted radially as the arm turns to vary the effort of the spring on the valve as it closes, means to limit the maximum etfort of said spring and thereby the maximum speed of the motor, and means to adjust said spring within said maximum to thereby vary the settings of said device.

I 19. A. governing device for hydrocarbon motors including in combination, an intake conduit, an unbalanced butterfly valve therein having a spindle. an arm secured to said spindle, yielding means, a second pivotally mounted arm acted on by said means. said arms having adjacent cam surfaces constructed to shift the point of contact thereof radially of the arms as they turn and means always under the control of the operator to vary the eti'ort of said yielding means and thereby the speed at the motor. I

20. A. gore ng device for hydrocarbon motors comprising aasntake conduit.au un balanced butterfly valve therein, and a counterbalancing means connected to balance the turning effort of said valve at a predetermined speed of the motor including an arm secured to turn with said valve, and yielding means acting on said arm having its point of action shifted radially as the arm turns to increase the effort of the yielding means on the valve as it closes, meansto adjust the limit of action or" said yielding means and supplemental means to adjust the yieldin,c means within said limit.

21. A governing device for the. intake of hydrocarbon motors including in combination, an intake conduit,,mcans in said conduit adapted to be actuated to obstruct said conduit in accordance with the flow or fluid therein, yielding means, and mechanism transmitting the etfort of said yielding means to oppose the obstruction of said con duit, said transmitting mechanism being constructed and arranged to vary the eilort exerted on said obstructing means by said yielding means as the obstruction of the conduit varies, adjustable means to limit the effort of said yielding means, and manually operable means to adjust said yielding means within said limit.

22. A governing device for the intake ol hydrocarbon motors including in combination, an intake conduit, means in said conduit adapted to be actuated to obstruct said conduit in accordance with the. flow of fluid therein, yielding means, and mechanism transmitting the eilort of said yielding means to oppose the obstruction of said conduit, said transmitting mechanism being constructed and arranged to vary the ell'ort exerted on said obstructing means by said yielding means as the obstruction of the conduit varies and manually operable lllotlllfi to adjust said yielding means and thereby vary the speed of the motor.

23. A governing device for the intake ol hydrocarbon motors including in comhination, anintake conduit, means in said conduit adapted to be actuated in accordance with the flow of the fluid to obstructsaid conduit, and means adapted to oppose the obstruction of said conduit with a resistance that increases at an accelerated rate as the obstruction becomes more complete, said resistance being equal to the obstructing etl'ortexerted by the flow of iluid at a predetermined speed of the motor and being unequal at other speeds and manually operable means always accessible to adjust said resistance to thereby vary said predetermined speed.

24. i governing device for the intake of hydrocarbon motors including in combination, an intake conduit. :1 butter-{iv valve insaid conduit pivoted to swing about an axis at one side of its center line whereby the operation of t-l-ieengineact-s to close said valve.

hydrocarbon motors including in combina-v tion, an intake conduit, a butterfly valve in said conduit pivoted to swing about an axis at one side of its center line whereby the operation of the engine acts to close said valve, and means constructed and arranged to op.-

pose the closing movement of said valve with a resistance equal and opposite to the closing tendency of the valve when the englne is running at a predetermined speed,

said resistance being unequal to said ten--' dency at other speeds, main adjusting means for said resistance, means to lock said adjusting means against tampering, and manually operable means to adjust said resistance within the limit set by the main adjusting means.

26. A governing device for the intake of hydrocarbon motors comprising in combination, a conduit, a valve in said conduit mounted to turn about an axis transverse thereto and to be actuated in a closing direction by the operation of the motor. yielding means, and means transmitting the effort of said yielding means to oppose ClOSing of said valve, constructed and arranged to increase the eifort of the yielding means on the valve as the valve moves in the closing direction, main adjusting means for said yielding means, means to lock said adjusting means against tampering, and manually operable means to adjust said yielding means within the limit set by the main adjusting means. Y

27. A governing device for the intake of hydrocarbon motors comprising in combination, a conduit, a valve in said conduit mounted to turn about an axis transverse thereto and to be directly acted on by the suction to move the same in its closing direction, and means to oppose movement of vsaid valve in a closing direction at a predetermined speed of the motor with an effort always equal to the effort acting to close the valve, said efforts being unequal at other speeds, main adjusting means for said opposing means, means to lock said adjusting means against tampering. and manually operable means to adjust said opposing means within the limit set by the main adjusting means.

In testimony whereof we hereunto affix our signatures.

' ROBERT G. HANDY.

ARTHUR A. BULL. 

